Will the Iran deal's first anniversary be its last?

Monday marked the anniversary of the United States' nuclear deal with Iran, an occasion President Obama chose to celebrate amid uncertainty over whether the deal will live to see next January.

The controversial non-proliferation agreement has caused a headache for Obama since it was implemented last winter, with critics accusing the administration of easing sanctions on Iran without getting much in return and strengthening a country that remains on the State Department's list of state sponsors of terrorism.

In his defense of the deal, Obama said Americans must measure it "against the alternatives" and recognize that it took "years of work" to craft.

"A diplomatic resolution that prevents Iran from obtaining a nuclear weapon is far preferable to an unconstrained Iranian nuclear program or another war in the Middle East," the president said in a statement released by the White House.

However, nothing Obama has said so far seems to have dissuaded his Republican successor from fulfilling his campaign promise to jettison what he's called "the disastrous deal with Iran."